v3.26.1
Shareholder Report
12 Months Ended
Oct. 31, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name Advisors' Inner Circle Fund III
Entity Central Index Key 0001593547
Entity Investment Company Type N-1A
Document Period End Date Oct. 31, 2025
C000149725  
Shareholder Report [Line Items]  
Fund Name MetLife Core Plus Fund
Class Name I Class Shares
Trading Symbol LPCIX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about I Class Shares of the MetLife Core Plus Fund (the "Fund") for the period from November 1, 2024 to October 31, 2025.
Additional Information [Text Block] You can find additional information about the Fund at https://investments.metlife.com/mutual-fund-documents/. You can also request this information by contacting us at 800-252-4993.
Additional Information Phone Number 800-252-4993
Additional Information Website https://investments.metlife.com/mutual-fund-documents/
Expenses [Text Block]

What were the Fund costs for the last year?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
MetLife Core Plus Fund, I Class Shares
$46
0.45%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.45%
Performance Past Does Not Indicate Future [Text] Past performance is not indicative of future performance.
Line Graph [Table Text Block]
Growth Chart
MetLife Core Plus Fund, I Class Shares
Bloomberg U.S. Aggregate Bond Index (USD) (TR)Footnote Reference*
Oct/15
$5,000,000
$5,000,000
Oct/16
$5,265,825
$5,218,525
Oct/17
$5,393,993
$5,265,611
Oct/18
$5,300,816
$5,157,485
Oct/19
$5,904,360
$5,751,077
Oct/20
$6,268,913
$6,106,914
Oct/21
$6,287,435
$6,077,723
Oct/22
$5,225,909
$5,124,584
Oct/23
$5,235,797
$5,142,825
Oct/24
$5,838,609
$5,685,201
Oct/25
$6,223,516
$6,035,360
Average Annual Return [Table Text Block]

Average Annual Total Returns as of October 31, 2025

Fund/Index Name
1 Year
5 Years
10 Years
MetLife Core Plus Fund, I Class Shares
6.59%
-0.15%
2.21%
Bloomberg U.S. Aggregate Bond Index (USD) (TR)Footnote Reference*
6.16%
-0.24%
1.90%
No Deduction of Taxes [Text Block] The table and graph presented do not reflect the deduction of taxes a shareholder would pay on Fund distributions or the redemption of Fund shares.
AssetsNet $ 111,930,546
Holdings Count | Holding 359
Advisory Fees Paid, Amount $ 35,116
InvestmentCompanyPortfolioTurnover 198.00%
Holdings [Text Block]

Asset/Sector WeightingsFootnote Reference*

Holdings Chart
Value
Value
Futures Contracts
0.0%
Real Estate
0.5%
Municipal Bonds
0.5%
Foreign Government Bond
0.8%
Consumer Discretionary
1.3%
Materials
1.6%
Consumer Staples
1.7%
Industrials
2.4%
Information Technology
2.9%
Energy
3.0%
Health Care
3.2%
Utilities
4.9%
Communication Services
4.9%
Asset-Backed Securities
9.3%
Financials
9.5%
U.S. Treasury Obligations
27.5%
Mortgage-Backed Securities
37.8%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.

Top Ten Holdings

Holding Name
Percentage of Total Net Assets
U.S. Treasury Notes, 3.50%, 10/15/2028
3.7%
U.S. Treasury Bonds, 4.75%, 5/15/2055
3.3%
U.S. Treasury Bonds, 4.88%, 8/15/2045
2.8%
U.S. Treasury Notes, 3.88%, 7/15/2028
2.6%
FNMA, 5.00%, 5/1/2055
2.3%
U.S. Treasury Notes, 3.63%, 10/31/2030
2.3%
U.S. Treasury Bonds, 3.00%, 2/15/2049
2.0%
U.S. Treasury Bonds, 3.13%, 5/15/2048
1.9%
U.S. Treasury Notes, 3.50%, 9/30/2027
1.7%
U.S. Treasury Notes, 3.38%, 9/15/2028
1.3%
Material Fund Change [Text Block]

Material Fund Changes

There were no material changes during the reporting period.  

Updated Prospectus Phone Number 800-252-4993
Updated Prospectus Web Address https://investments.metlife.com/mutual-fund-documents/
C000149726  
Shareholder Report [Line Items]  
Fund Name MetLife Core Plus Fund
Class Name R Class Shares
Trading Symbol LPCYX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about R Class Shares of the MetLife Core Plus Fund (the "Fund") for the period from November 1, 2024 to October 31, 2025.
Additional Information [Text Block] You can find additional information about the Fund at https://investments.metlife.com/mutual-fund-documents/. You can also request this information by contacting us at 800-252-4993.
Additional Information Phone Number 800-252-4993
Additional Information Website https://investments.metlife.com/mutual-fund-documents/
Expenses [Text Block]

What were the Fund costs for the last year?

(based on a hypothetical $10,000 investment) 

Fund Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
MetLife Core Plus Fund, R Class Shares
$46
0.45%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.45%
Performance Past Does Not Indicate Future [Text] Past performance is not indicative of future performance.
Line Graph [Table Text Block]
Growth Chart
MetLife Core Plus Fund, R Class Shares
Bloomberg U.S. Aggregate Bond Index (USD) (TR)Footnote Reference*
Oct/15
$5,000,000
$5,000,000
Oct/16
$5,265,484
$5,218,525
Oct/17
$5,377,625
$5,265,611
Oct/18
$5,279,193
$5,157,485
Oct/19
$5,651,579
$5,751,077
Oct/20
$5,773,256
$6,106,914
Oct/21
$5,815,998
$6,077,723
Oct/22
$4,829,658
$5,124,584
Oct/23
$4,756,458
$5,142,825
Oct/24
$5,157,223
$5,685,201
Oct/25
$5,288,332
$6,035,360
Average Annual Return [Table Text Block]

Average Annual Total Returns as of October 31, 2025

Fund/Index Name
1 Year
5 Years
10 Years
MetLife Core Plus Fund, R Class Shares
2.54%
-1.74%
0.56%
Bloomberg U.S. Aggregate Bond Index (USD) (TR)Footnote Reference*
6.16%
-0.24%
1.90%
No Deduction of Taxes [Text Block] The table and graph presented do not reflect the deduction of taxes a shareholder would pay on Fund distributions or the redemption of Fund shares.
AssetsNet $ 111,930,546
Holdings Count | Holding 359
Advisory Fees Paid, Amount $ 35,116
InvestmentCompanyPortfolioTurnover 198.00%
Holdings [Text Block]

Asset/Sector WeightingsFootnote Reference*

Holdings Chart
Value
Value
Futures Contracts
0.0%
Real Estate
0.5%
Municipal Bonds
0.5%
Foreign Government Bond
0.8%
Consumer Discretionary
1.3%
Materials
1.6%
Consumer Staples
1.7%
Industrials
2.4%
Information Technology
2.9%
Energy
3.0%
Health Care
3.2%
Utilities
4.9%
Communication Services
4.9%
Asset-Backed Securities
9.3%
Financials
9.5%
U.S. Treasury Obligations
27.5%
Mortgage-Backed Securities
37.8%
FootnoteDescription
Footnote*
Percentages are calculated based on total net assets.

Top Ten Holdings

Holding Name
Percentage of Total Net Assets
U.S. Treasury Notes, 3.50%, 10/15/2028
3.7%
U.S. Treasury Bonds, 4.75%, 5/15/2055
3.3%
U.S. Treasury Bonds, 4.88%, 8/15/2045
2.8%
U.S. Treasury Notes, 3.88%, 7/15/2028
2.6%
FNMA, 5.00%, 5/1/2055
2.3%
U.S. Treasury Notes, 3.63%, 10/31/2030
2.3%
U.S. Treasury Bonds, 3.00%, 2/15/2049
2.0%
U.S. Treasury Bonds, 3.13%, 5/15/2048
1.9%
U.S. Treasury Notes, 3.50%, 9/30/2027
1.7%
U.S. Treasury Notes, 3.38%, 9/15/2028
1.3%
Material Fund Change [Text Block]

Material Fund Changes

There were no material changes during the reporting period.  

Updated Prospectus Phone Number 800-252-4993
Updated Prospectus Web Address https://investments.metlife.com/mutual-fund-documents/